APA

Killough H. B., Killough L. (., . (1948). Economics of international trade. New York: McGraw-Hill Book Co.

Chicago

Killough Hugh Baxter, Killough Lucy (Winsor), . 1948. Economics of international trade. New York: McGraw-Hill Book Co.

Harvard

Killough H. B., Killough L. (., . (1948). Economics of international trade. New York: McGraw-Hill Book Co.

MLA

Killough Hugh Baxter, Killough Lucy (Winsor), . Economics of international trade. New York: McGraw-Hill Book Co. 1948.